Fluval U4 Underwater Filter Poly Clearmax Cartridge - 2 Pack Subcategory_Infrared/Heat Lamps Glass thickness max 3/8"

Glass thickness max 3/8"

API® Pond Ecofix Sludge Destroyer reduces pond maintenance by breaking down fish waste and dead algae

The mixture of flakes and dried

Cholecalciferol (D3)

Gravel modifiers such as laterite are not necessary

Fluval U4 Underwater Filter Poly Clearmax Cartridge - 2 Pack Subcategory_Infrared/Heat Lamps Glass thickness max 3/8"Fluval Poly Clearmax filter cartridge helps control green water and unsightly algae growth by adsorbing and trapping phosphate, nitrite and nitrate. It effectively produces crystal clear water, reduces odors, and creates ideal conditions for fish and plants. The filter cartridge helps reduce overall aquarium maintenance. It is ideal for freshwater and marine environments. Key Features : Filter cartridge helps control green water and unsightly algae